14.9.2 Specifying the Row Format for a Table 指定 表的行格式

14.9.2 Specifying the Row Format for a Table  指定 表的行格式

mysql>  SHOW TABLE STATUS\G;
*************************** 1. row ***************************
           Name: user
         Engine: InnoDB
        Version: 10
     Row_format: Compact
           Rows: 11
 Avg_row_length: 1489
    Data_length: 16384
Max_data_length: 0
   Index_length: 0
      Data_free: 0
 Auto_increment: NULL
    Create_time: 2016-07-04 23:39:21
    Update_time: NULL
     Check_time: NULL
      Collation: utf8_general_ci
       Checksum: NULL
 Create_options:
        Comment:
1 row in set (0.00 sec)

ERROR:
No query specified

你指定表的row format 使用ROW_FORMAT 子句在创建表或者ALTER TABLE 语句的时候 比如:

CREATE TABLE t1 (f1 int unsigned) ROW_FORMAT=DYNAMIC ENGINE=INNODB;

InnoDB ROW_FORMAT 选项包括 COMPACT, REDUNDANT, DYNAMIC, and COMPRESSED. 

对于InnoDB 表， 行是存储在COMPACT 格式默认(ROW_FORMAT=COMPACT)